Improvement in locomotive head-lights



S. M: DAViES.

Locomotive'Head Light.

Patented Decff671870.

WIT/VESSES N. PETERS, mlo-Lithagnpur. wnningwn. D. C.

nicht gaar sAMUEL M. DAvIEs, oF oHIoAeo, ILLINOIS.

Letters Peten Ne. 1o9,s77,.de'eed December c, 1870; entede'eed November 23, 1870.

|MPRovEMENr-IN LocoMo-rlve HEAD-meurs.

The Schedule referred to Ln these Letters Patent and making part of the lame.

I, SAMUEL M. DAVIES, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Locomotive Headlights', ot' which the following is the specification.

Nature and Object of the Invention.

ment of the bearings', packing, and supporting-shell or tube, in which operates the wheel that raises and lowers the wick, as hereinafter set forth.

Description of the Accompanying Drawing.

Figure 1 an upright view.

Figure 2 is a vertical sectional'view.

Figure 3 is an upright view of that part of the ontside or shell which supplies the air to the outside of the flame, with the openings or slots running perpendicularly.

Figure 4 is an upright view of that part of the ontside or shell which supplies the air to the inside of the Haine, with the opening or slots rnning around each independently ofthe other, thusf'orming a series Figure 5 is a view of the ratchet-shaft.

Figure 6 isa transverse view of t-he lower shell, as seen in fig. 3.

General Description..

Similar letters of reference refer to similar parts.

A is a shell or outside cylinder surroundingthe cylinder J.

At equal distances apart, on the inside of the shell, are located ribs V V V V, four in number, as seen in iig. 6. Two of these ribs can be seen in Jig. 2.

B is a shell like A, located at the base ot' the cylinder J, and having ribs the same.

These shellsare made as follows: A hollow tube, with the ribs V V V V, is made of brass. by casting it whole. It is then placed in a lathe and a continuous-winding slot is turned in the shell, leaving and forming a thread, similar to athread in a screw. This slotv is turned clear through the shell, at all points excepting at the points where the ribs V V V V are located.

The ribs serve the purpose ofholding in position the threads, which are made by turning the continuous slet. Both shells A andB are made in the same way from a tube, with the ribs V V V V cast on the inside.

- Fig. 3 shows this same shell, cast with the ribs circu' lating aroundon the inside, and located at right angles with the slots.

Fig. 4 shows the slots ruiming around the shell, each .independent of the other, and forming separate rings, and supported by ribs the same asin figs. land 2.

Between the shell and the cylinder J there is a space the width of the ribs V V V V. Upon the top ot' the shell c fits the cap or dome It, with a flange sufficiently large to sustain the glass chimney.

fithiu the cylinder J is another cylinder,` X, having a spacc between thc two, into which the oil passes througl-l the apertures Z. w

Upon the top of thisinuer cylinderXfits the sleeve W.

To the lower end of this sleeve XV is attached the ratchet IT, which-works in the space between the two cylinders J and X. This ratchet extends downward into the extended slot or pipe O.

E is a ratchet-wheel attached tothe shat't D, and working in ratchet N.

The shaft D works in the bearing H, which screws into the case (l. in the bearing F. This bearing F screws into the outer end of the case C. The shaft D is fastened to the handle L by means of the screw K. That partofl the shaft D which passes through thehandle L is made square, as shown in iig. 5.. f

I is the packing between the two bearings F and H.

TTare bearings on the inside of the inner tubevx, and supported by braces extending from the cylinder X. In these bearings lit the rod T, and to t-he toplot' this rod fits the-button T'. e

Operation of :the I ncention.

- The wick is attached to the sleeve XV, and by turning the handle L the ratchetN descends into the tube O, which draws down the sleeve XV, which in turn draws thc wick over the cylinder X.

The oil passes through the apertures Z and sate'- ratcs the wick, and by turning Iche handle L it is lowered or raised at pleasure.

The lower shell B is attached to the cylinder J ,leaving no opening at the top of the shell, between it and the cylinder J, the cylinder J' only extending to the shell B; lturning the continuons groove, as afore-described, in

regular and continuous supplies, which passes up through `the central cylinder X and supplies the dame on the inside.

The air passes through the continuous groove'in the shell A, and in at the bottom ofthe shell; thence'up-,.

aient v(effin. I

At the other end this shaft D worksv The air passes through the opening made by ward between the shell A and the cylinder J, under the cap or dome R, and thus supplies the dame from the outside.

By turning the bearing l" forward or backward, the packing I is made to fitthe shaft D more or less tightly. 'ihebearing H is placed in position from the outer end of the'ease G, the same as is the bearing E, thus relieving the necessity of removing the case C when you wish to replair or replace the ratchet E.

The nutv Kis removed, when the handle Lwill slip olf, and then thel hearing F can be removed and then, by using a slotted screwdriver, the bearing H can be removed, when the shaft D and wheel E can be taken ont.

In this construction it will be seen that air is snpplied to both sides of the ame at the same time.

The use ofthe shells, made as herein described, enables me tomakealccomotive head-light much stronger, Vand will much longer withstand the constantsliaking and jarring, than those now in use, and at thc same time the openings through which the air enters to snpply the flame are not as liable to be closed by dust and dirt, thus insuring a constant and uniform supply of air to the dame.' l am also enabled to make the burner part cfa locomotive head-light much smaller in diameter than those now iI'nse. Thus the surface of the releetor is increased at and ucar the. focus, where the light is the, most intense land where the reflection is the most brilliant. lhe opening at the bottom ofthe shell A, which is between it and the cylinder J, can,

be closed, if desired.

The. shells A and B could be east without the ribs V V V V, and afterward the ribs could be brazed on, but I prefer to cast them with the shell.

`1. 'lhe shells A and B, made with a continuons.,- winding thread, substantially as 'and for the purpose" Witnesses z J As. A. GowLEs, R. H. Folmesrnn.

made with a. continuk'us'v 

